A 0.85−2.7GHz Tunable Low-Noise Amplifier for GSM/GPS/CDMA/WiFi/WiMAX/LTE Applications

this paper presents a wideband tunable low-noise amplifier (LNA) design and simulation in a 0.13-μm RF CMOS technology. The LNA benefits from a wideband input impedancematched to the source using a third-order band-pass matching network and also a tunable load. The LNA functionality issimilar to convenient narrow-band LNAs while it can be tuned for operation in various frequencies from 850 MHz to 2.7 GHz.This is made possible by employing a tunable LC load at the cascode stage of the first stage while the input is matched for all frequencies due to wideband matching network. A maximum gain and minimum noise figure of 21.4 dB and 3.2 dB was achieved, respectively. The input return loss was achieved better than 13.6 dB for entire frequency band. The power consumption is 5.76 mW at a 1.2-volt dc supply

Keywords:

LNA , tunable , widebad , reconfigurable , band-pass